Hatchway mechanism



' (No Model.)

B. D. SHAW.

- HATOHWAY MECHANISM.

No. 497,828. Patented May 23, 1893.

W/ TNEESES. //\/VE/\/7'OF?. 2 W @244, AyZM UNITED STATES PATENT OFFICE.

ELISI'IA D. SHAlV, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HANSON A. JOHNS, OF SAME PLACE.

HATCHWAY MECHANISM.

SPECIFICATION forming part of Letters Patent No. 497,828, dated May 23, 1893.

Application filed November 9, 1892. Serial No. 451,436. (No model.)

To aZZ whom it may concern: vator well b',a plate or bracket and having Be it known that I, ELISHA DOUGLAS SHAW, one of its extremities g, weighted to balance a citizen of the United States, residing at a portion of the weight of the floor door 11 Philadelphia, in the county of Philadelphia and also connected with the arm a, by means 55 5 and State of Pennsylvania, have invented cerof a link or rod /L. The other extremity 9 rain new and useful Improvements in Mechof the arm g, passes through and works in a anism Automatically Operated by Elevators loop or staple 'i, secured to the floor door b forOpening and Closing Flooror Hatch Doors, This staple may be provided with a roller t", of which the following is a specification. in order to permit the end 9 of the arm 60 TO The principal objects of my invention are to work freely therein.

first, to provide a simple, compact, durable, From the foregoing description it will be efficicntand comparativelyinexpensive inechobserved that the arms a and g, and the link anism adapted to be automatically actuated h, are located wholly within the elevator well byan elevator and operating to open transb, so that the wallet the well is not cutaway. 6-; l5 versely ranging floor or hatch doors to permit Thehereinbeforedescribedhatchway mechof the descent of the elevator and so arranged anism located at one side of the elevator well as to close after the elevator has passed; and is duplicated on the other side thereof. second, to provide mechanism applied to the The mode of operation of the hereinabove guide rail beam or stile in such manner as described mechanism is as follows:-When 70 not to require cuttinginto the beam or stile or the elevator oarf, is descending toward the into the wall of the building, the construction story 1, as indicated by the arrow in the drawand arrangement being such that the moveing, the rollers e, collide with the arms a,and ment of the elevator or carautomatically actturn them downward. This movement of the uates mechanism to open the hatch doors of arms a, acting through the instrumentality 75 an elevator well connected with the different of the links or rods 71, causes the ends g, of

floors of a building. the arms g, to be turned downward. The My invention consists of the improvements downward movement of the ends g, of the hereinafter fully described and claimed. arms g, causes the outer ends 9 thereof to The nature, characteristic features and move upward, thus opening the floor doors 8o scope of my invention will be more fully un- 19 and bringing strips secured to the under derstood from the following description taken side thereof into a position for guiding the in connection with the accompanying drawelevator car. It is to be understood that the ing forming part hereof and illustrating ends 9 of the arms g, are afforded a range partly in vertical elevation and partlyin secof movement in the loops or staples i, and 85 tion an elevator shaft or well, an elevator car, thus form a sliding connection which compenand mechanism embodying features of my sates for the eccentricity of the movements invention adapted to be automatically actuof the floor or hatch door 19 and the arm g,

ated by the elevator car and operating to open due to the distance between the axis of the the floor or hatch doors to permit of the dedoor and the axis of the arm 9. While the 90 o scent of the elevator car and to permit the elevator car is descending past the floor or floor or hatch doors to close after the elevahatch doors b the latter are held in open potor car has passed. sition by the side walls of the car, and as soon In the drawing, a is a club-shaped pawl as the elevator car has passed by the floor or pivotally connected at one of its extremities hatch doors the latter are released and per- 9 5 to the stile or beam of the guide rail bof the mitted to close, either under the influence of elevator wellb, by means of aplate or bracket, gravity or of a suitable spring, into the posiand having its other extremity disposed in tion shown at story 2,in the drawing.

range of a roller or lug e, projecting from the When the elevator car is ascending, the

bottom of the elevator car f. band or loop f, contacts with the under side too g, isa curved tapering arm similarly pivoted of the doors and pushes them and also the to the guide rail beam or stile b, of the elearms a, upward into open position, and as soon as the elevator car has passed beyond the doors the latter are again permitted to return under the influence of a spring or by gravity to a closed position.

The fact that the entire mechanism hereinbefore described,and adapted to be operated upon by the movement of the elevator for opening the floor or hatch doors, is confined as to location to about the guide rail beams or stiles, is important, because all necessity, in the applying of the same to elevators now in use, of cutting into the walls of a building therefor adjacent to the floor or hatch doors is'avoided.

It Will be obvious to those skilled in the art jects of my invention, what I claim as new, and desire to secure by Letters Patent, is

In an elevator, recessed guide rail stiles, hinged doors provided with staples on one of their respective'faces, two sets of brackets secured to said guide rail stiles, club-shaped pawls pivoted to one set of said brackets, curved tapering arms pivoted to the other set of said brackets and having sliding engagement with said staples, vertical rods respectively pivoted at one of their extremities to said pawls and at the other to said arms; and a car adapted to run on said stiles, substantially as set forth.

In witness whereof I have hereunto set my signature in the presence of two subscribing V witnesses.

ELISHA D. SHAW. Witnesses:

THoMAs M. SMITH, RICHARD O. MAXWELL. 

